When you move countries, you'll be asked to prove things — birth, marriage, a clean criminal record, a degree — with official documents. An apostille is a standardized certificate attached by the issuing country's authority that confirms the document is genuine, so the destination country accepts it without further legalization.
It only works between countries that are party to the 1961 Hague Apostille Convention; for others, you need a longer consular legalization process. Getting key documents apostilled early is one of the quietly important steps in any serious move.
Why it matters for your move
Visa and residency applications routinely stall on un-apostilled paperwork. Knowing what an apostille is — and sorting yours before you go — removes one of the most common, frustrating delays in relocating.